Advanced Materials Research Vols. 724-725

Abstract: The author gives and analyzes the percentage of the electricity consumption of the terminal to the entire airport, which is based on the 10 busiest domestic airports in China. A new idea and method is proposed to estimate and design the airport power capacity (electrical loads), which is shown to be feasible and applicable by the experimental data.

Abstract: A technological transformation was carried out for the aging and high energy consumption of the original powder grinding system equipment. By comparing different programs, a pre-grinding method was designed with advanced FPP grinding. This method could reduce the cost, save energy, and ensure the production capacity of cement grinding and product quality meeting the design requirements.

Abstract: Through a comparative analysis, this paper attempts to summarize the hourly variations of the total energy consumptions and itemized energy consumptions in a culture and education comprehensive building in summer, winter, and the transitional season. The results show a great difference in energy consumptions in the same building in different seasons. Energy consumption is highest in winter. There is a minor difference in energy consumptions between a typical day in summer vacation and a normal work day in summer. The lowest energy consumption is in winter vacation, but a typical day in winter vacation would still consume about half of the energy consumed on a normal working day in winter. Keywords: Comprehensive building; analysis of energy consumption; itemized energy consumption

Abstract: In this paper, we present a mathematical model which aims to save energy of household appliances, take the brownie pan as example we take advantage of the heat conduction and draw the conclusion that the pan in shape with more edges has more even distribution of heat. In most cases, the shape of rectangle is the best choice to save energy when bake. In Heat conduction model, We raise a conception of doneness to accurately measure how hard the food is being baked, and we handle a second-order partial differential equation based on the heat transfer theory, considering both evenly heating vertically and heat transferring horizontally. We focus on the ratio of how well roasted the edges and the corners are shows the distribution of heat across the outer edge of a pan for pans of different shapes. The variance of all points heating level on the pan shows the evenness of the heat distribution.

Abstract: Collection of the stadium natural light environment design information, part of the stadium of light environment with representative of site investigation, then the optical quality of the environment and the operation status of the subjective analysis and evaluation. The negative effect and in-depth study of all kinds of sports project natural lighting technology requirements for lighting stadium and gymnasium, reveals the technical problems of the stadium natural light environment design. Combined with the collection and integration of the relevant information, introduces the related technology and advanced design method of the stadium natural light environment design information. Through the analysis of influence factor of value foundation to enhance the basic approach based on and on, to further explore the market analysis and positioning. Procedure for determining the value engineering implementation the stadium natural light environment design work, lay the foundation for the optimization of the stadium natural light environment design to carry out new design ideas, methods and techniques.

Abstract: Effect of ground source heat pump (GSHP) on control large warehouse temperature and the quality of grain during the storage in it was investigated. GSHP exhibited a better control in temperature in warehouse and grain heap. Compared with traditional warehouse, the temperature in warehouse installed GSHP and grain heap in which were all lower than 20°C in a whole year. The parameters of biological activity of grain were determined. At the end of storage, the moisture content of rice in the test warehouse was 0.39% higher than control and the total bacteria counts of rice were one time higher in the control warehouse than that in the test warehouse.

Abstract: Energy crisis and environmental protection are becoming the focus of the sustainable development, which strongly calls construction of green power. This paper defines green power grid content. Evaluate energy conservation from power generation side, transmission side, distribution side and electricity side, emissions reduction from atmospheric environmental impact, water environmental impact and, noise influence and solid waste influence, so as to establish the energy conservation and emission reduction evaluation index system for green power grid. Combination weight based on AHP and entropy and fuzzy comprehensive evaluation are established. A case analysis in China verifies that the proposed evaluation indicators and model are validated and practical.

Abstract: The energy saving operation optimization of a 1Mt/a gasoline and diesel hydrofining unit was performed. The specific measures include: ① Make the heated feedstock to be feed directly; ② Take targeted measures to avoid the bed pressure drop increasing too fast. According to the methods of the operation optimization above, they could be expected to be able to save 400 tons of standard coal per year for the company, which have certain economic benefits. They can also increase the safety of the unit.

Abstract: To lower the power consumption of elevator ,a Continuously Variable Transmission(CVT) is installed between traction mechanism and counterweight and optimize the mass of elevator counterweight .Adjust gear ratio by CVT,control the elevator counterweight lifting distance to adjust counterweight potential changes, the counterweight potential energy change reasonably compensate the elevator car potential changes,thereby obtaining satisfactory energy-saving effect.Use MATLAB/SIMULINK to establish the elevator traction system dynamics model to finish the power consumption analysis of elevator.

Abstract: A vertical U-tube ground heat exchanger can be utilized to exchange heat with the soil in ground source heat pump systems. The outlet temperature of the working fluid through the U-tube not only accounts for heat transfer capacity of a ground heat exchanger, but also greatly affects the operational efficiency of heat pump units, which is an important characteristic parameter of heat transfer process. It is quantified by defining a thermal effectiveness coefficient. The performance evaluation is performed with a three dimensional numerical model using a finite volume technique. A dynamic simulation was conducted to analyze the thermal effectiveness as a function of soil thermal properties, backfill material properties, separation distance between the two tube legs, borehole depth and flow velocity of the working fluid. The influence of important characteristic parameters on the heat transfer performance of vertical U-tube ground heat exchangers is investigated, which may provide the references for the design of ground source heat pump systems in practice.